25,078 questions
You could try disabling AutoUpgrade, waiting a few minutes then enabling it again.
I think this is what worked for us.
Microsoft Entra Connect Sync Upgrader attempts to upgrade 2.4.129 to 2.4.129 every hour
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André Sikma
45
Reputation points
Hi All,
On Monday March 3rd, our Microsoft Entra Connect Sync was upgraded automatically from v2.4.27.0 to v2.4.129.0. Earlier, back in December 2024, I manually upgraded from Azure AD Connect to MS Entra Connect v2.4.27.0.
The Settings > Apps reports Microsoft Entra Connect Sync v 2.4.129 (Actually twice)
The AD Sync service is performing its task, the Admin Centre confirms that, but ever since the automatic upgrade from .27 to .129 was applied, every hour (+ a few minutes) the AD Sync service is stopped, and started some time later again.
The folder %ProgramData%\AADConnect contains log-files for for each run, which was until Monday only once in a while, and now every hour.
I cannot believe that this is expected behavior, but from the log files I cannot find what is wrong.
March 3 the initial upgrade attempt and older upgrades:
- Synchronization Service_AutoUpgrade-timestamp.log
- ADSyncBootstrap-timestamp.log
- AzureADConnect_AutoUpgrade-timestamp.log
- mv-timestamp-Guid.dsml
- SyncRulesRestoreScript-timestamp-Guid.ps1
- SyncRulesScript-timestamp-Guid-Guid.ps1
- SyncRulesScript-timestamp-Guid-Guid.ps1
- InstalledADSyncPowerShellHelper-timestamp.log
- InstalledADSyncPowerShellHelper-timestamp.log
For the past few days the following files for every run
- ADSyncBootsrap-timestamp.log
- SyncEngine-AutoUpgrader-timestamp.log
- InstalledADSyncPowerShellHelper-timestamp.log
Plus for the last run:
- AADConnectUpgrader_uninstall.log Containing the uninstall of 'Microsoft Entra Connect Upgrader'
March 3 the initial upgrade attempt:
- Synchronization Service_AutoUpgrade-timestamp.log
- ADSyncBootstrap-timestamp.log
- AzureADConnect_AutoUpgrade-timestamp.log
- mv-timestamp-Guid.dsml
- SyncRulesRestoreScript-timestamp-Guid.ps1
- SyncRulesScript-timestamp-Guid-Guid.ps1
- SyncRulesScript-timestamp-Guid-Guid.ps1
- InstalledADSyncPowerShellHelper-timestamp.log
- InstalledADSyncPowerShellHelper-timestamp.log
Installed versions are:
| Name | Version |
|---|---|
| Microsoft Azure AD Connect Upgrader | 2.4.129.0 |
| Microsoft Azure AD Connect Agent Updater | 1.5.3599.0 |
| Microsoft Azure AD Connect Authentication Agent | 1.5.1742.0 |
| Microsoft Entra Connect Sync | 2.4.129.0 |
| Microsoft Entra Connect Sync | 2.4.129.0 |
| Microsoft Entra Connect Health Agent | 4.5.2487.0 |
| Microsoft Entra Connect synchronization services | 2.4.129.0 |
| Microsoft OLE DB Driver for SQL Server | 18.7.4.0 |
| Microsoft SQL Server 2012 Native Client | 11.4.7001.0 |
| Microsoft SQL Server 2012 Express LocalDB | 11.4.7469.6 |
| Microsoft SQL Server 2012 Command Line Utilities | 11.4.7001.0 |
| Microsoft Command Line Utilities 15 for SQL Server | 15.0.2000.5 |
| Microsoft Visual C++ 2013 x64 Additional Runtime - 12.0.40660 | 12.0.40660 |
| Microsoft Visual C++ 2013 x64 Minimum Runtime - 12.0.40660 | 12.0.40660 |
| Microsoft Visual C++ 2019 X64 Minimum Runtime - 14.29.30036 | 14.29.30036 |
| Microsoft Visual C++ 2019 X64 Additional Runtime - 14.29.30036 | 14.29.30036 |
| Microsoft ODBC Driver 17 for SQL Server | 17.10.6.1 |
| Microsoft SQL Server 2019 LocalDB | 15.0.4138.2 |
When the upgrade is running an additional package is showing up: Microsoft Entra Connect Upgrader v2.4.129.0.
Andre Sikma
Microsoft Security | Microsoft Entra | Microsoft Entra ID
{count} votes
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Raja Pothuraju 23,470 Reputation points Microsoft External Staff Moderator2025-03-24T20:16:02.1366667+00:00 Hello @André Sikma,
I just wanted to check if the workaround helped resolve the issue—disabling AutoUpgrade, waiting for a few minutes/hours, and then enabling it again.
This issue has been reported by multiple customers through support tickets and is currently under discussion with our engineering team.
Please let me know if the workaround didn’t help so we can explore further solutions.
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Accepted answer
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(259.20000000000005, 22%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKM%3C/text%3E%3C/svg%3E)
Kevin MacGillivray 85 Reputation points2025-03-12T13:29:40.0666667+00:00 -
WinXPSP264BitPro-0326 0 Reputation points2025-03-12T16:11:03.1133333+00:00 Performed the same procedure and the issue appears to be resolved.
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WinXPSP264BitPro-0326 0 Reputation points
2025-03-12T16:12:16.1533333+00:00 Performed this procedure and the issue is now resolved. Waited for entire 'cycle' of the previous update cadence before enabling again.
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André Sikma 45 Reputation points
2025-03-14T14:55:43.59+00:00 I have tried this one as well, disabling it for a few hours, without the desired effect.
However, prior to writing this question, I had followed the instructions outlined in this article: https://learn.microsoft.com/en-us/troubleshoot/entra/entra-id/user-prov-sync/troubleshoot-aad-connect-fails-to-install-upgraded-version
Obviously, it didn't have the desired result. However, since that attempt, the mentioned cadence was completely gone.Have disabled the auto-update, and will leave it off over the weekend. Will see what happens on Monday.
André
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Chris King 5 Reputation points2025-03-20T21:13:24.48+00:00 So, I disabled it but did not wait long. After leaving it disabled a week or so seems to have fixed the issue. Set back to autoupgrade and it is NO LONGER trying to upgrade every hour.
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André Sikma 45 Reputation points
2025-03-25T13:28:40.4566667+00:00 After having left the AutoUpgradeState Disabled over the weekend I enabled it again.
Now, 1 week later, the last logged upgrade-attempt is March 13.
Disabling the AutoUpgradeState for a prolonged time seems to resolve the problem. Now, hope it does start doing it's job the next time it is needed.
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Chris King 5 Reputation points
2025-03-25T13:59:05.6866667+00:00 I would add that a few minutes might not be enough.
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4 additional answers
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Marcos Lopez 10 Reputation points2025-03-10T13:46:40.82+00:00 I have the exact same issue. I disabled the upgrades in powershell: Set-ADSyncAutoUpgrade Disabled
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Hewitt Colly 0 Reputation points2025-03-12T12:59:38.7266667+00:00 I have encountered the same issue starting on 3/10. Do we know if there is a fix, or should we just disable auto-update for the time being?
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Andy David - MVP 157.5K Reputation points MVP Volunteer Moderator2025-03-12T13:24:23.3666667+00:00 I would recommend opening a ticket with Entra support.
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Chris King 5 Reputation points
2025-03-12T17:03:36.8166667+00:00 I opened a ticket but have not started engaging with them yet. I also noticed because one step is to add the service account to local admins group, and we are getting a security ticket created each hour due to this. Annoying. I actually plan to disable auto upgrade anyway but will post back anything I get from support.
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Chris King 5 Reputation points
2025-03-20T19:44:13.22+00:00 Update: contacted support but so far, they don't really seem to understand what I am asking. I disabled auto update and think I might just leave it that way and just manually upgrade as needed but my staging server still has not updated. I find references on Internet that it should upgrade, and MS has not answered that question either.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(96, 64%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EVT%3C/text%3E%3C/svg%3E)
vinay talla 0 Reputation points2025-03-28T09:16:37.71+00:00 Any update
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